The spread of a devastating computer virus jeopardizes the entire world. It could also mean the ultimate stall out for KITT, who becomes infected by the big bug. Elsewhere, Mike's jealousy grows when Sarah reconnects with her ex-beau.

Mike and KITT continue their high-octane mission to foil a terrorist and rescue an ambassador. But the quest turns even more perilous when a bomb is placed inside KITT---and it will explode if the car is driven below a certain speed. Meanwhile, Sarah receives shocking information about her father.